I smelled this at the Diptyque store a while back and it wasn't what I expected at all, at least on paper. If you're familiar with Diptyque's L'Eau - it's their signature first scent, kind of like a mix of orange and cloves over Old Spice-esque powdery florals. Vetyverio came across as kind of a vetiver flanker to L'Eau. Most of the notes listed make sense when you think of it this way.
mandarin, grapefruit, lemon, bergamot, ylang ylang, Turkish rose, geranium, vetiver, carrot seeds, nutmeg, clove and cedar
The mandarin, grapefruit, lemon, bergamot, and clove are the famous Diptyque L'Eau clovey citrus notes, while the flowers are the powdery floral notes.
This really just leaves the nutmeg, vetiver, and cedar to combine into the vetiver note (vetiver almost always seems to be mixed with nutmeg).
If you're expecting fresh and modern, this isn't it. But if the thought of a barbershoppy classic vetiver (in the vein of a more vetiver-centric Raquets Formula) gets you drooling, you should really track down a sniff...